Mr Cecil Wong is not slowing down, even at 90.
He is an independent director of four companies, a testament to his number-crunching skills that he brings to the boards on which he sits.
Not surprisingly, he hails from an illustrious family of accountants. His father, the late Mr Evan Wong, set up one of Singapore's first accounting firms, Evan Wong & Company, in 1926.
The Wong family's contributions to the industry will be commemorated in a book and a website, as part of the Institute of Certified Public Accountants of Singapore's 50th anniversary next month.
After several mergers, Evan Wong & Company is now part of audit giant Ernst & Young.
"I didn't know what I wanted to do when I grew up," said Mr Wong, who retired from his profession decades ago. "But my father offered me the option of joining his firm if I took on accounting."
"As I saw how much he had helped others, I knew I wanted to do the same," said the devout Christian, with a hint of nostalgia.
Both his eldest son and grandson have followed in his footsteps, extending the family line of accountants to four generations.